Convert Kilopascal to Hectopascal
1 kilopascal = 10 hectopascal (hPa). For example, 10 kilopascal = 100 hectopascal and 100 kilopascal = 1,000 hectopascal. Type any value below to convert kilopascal to hectopascal both ways — it runs entirely in your browser.
Quick answer: Kilopascal to Hectopascal
1 Kilopascal = 10 Hectopascal (kPa → hPa). To convert kilopascal to hectopascal, multiply by 10. To convert hectopascal to kilopascal, multiply by 0.1. The converter at the top does this instantly and both ways; the sections below give the formula, worked examples, a full conversion chart and answers to the most common kilopascal-to-hectopascal questions.
How to convert Kilopascal to Hectopascal
To convert kilopascal to hectopascal, multiply the number of kilopascal by the conversion factor 10, because 1 kPa = 10 hPa. The conversion is linear, so the same factor works for any value — whole numbers, decimals or fractions. For the reverse direction, 1 hPa = 0.1 kPa, so you divide by 10 (or multiply by 0.1) to turn hectopascal back into kilopascal.
hPa = kPa × 10 ·
kPa = hPa × 0.1
- Write down the value you want to convert, in kilopascal.
- Multiply it by 10.
- The result is the same area/length/quantity expressed in hectopascal.
Kilopascal to Hectopascal — worked examples
Each row shows the exact arithmetic so you can follow the conversion step by step. For example, 5 kilopascal is 50 hectopascal because 5 kPa × 10 = 50 hPa.
| Kilopascal | Calculation | Hectopascal |
|---|---|---|
| 1 kPa | 1 kPa × 10 = 10 hPa | 10 hPa |
| 2 kPa | 2 kPa × 10 = 20 hPa | 20 hPa |
| 3 kPa | 3 kPa × 10 = 30 hPa | 30 hPa |
| 5 kPa | 5 kPa × 10 = 50 hPa | 50 hPa |
| 7 kPa | 7 kPa × 10 = 70 hPa | 70 hPa |
| 10 kPa | 10 kPa × 10 = 100 hPa | 100 hPa |
| 12 kPa | 12 kPa × 10 = 120 hPa | 120 hPa |
| 15 kPa | 15 kPa × 10 = 150 hPa | 150 hPa |
| 20 kPa | 20 kPa × 10 = 200 hPa | 200 hPa |
| 25 kPa | 25 kPa × 10 = 250 hPa | 250 hPa |
| 50 kPa | 50 kPa × 10 = 500 hPa | 500 hPa |
| 100 kPa | 100 kPa × 10 = 1,000 hPa | 1,000 hPa |
Common Kilopascal to Hectopascal conversions
These are the kilopascal-to-hectopascal values people look up most often. Every figure is computed from the exact factor, so you can rely on them for quick reference:
- 1 kilopascal = 10 hectopascal
- 2 kilopascal = 20 hectopascal
- 2.5 kilopascal = 25 hectopascal
- 3 kilopascal = 30 hectopascal
- 4 kilopascal = 40 hectopascal
- 5 kilopascal = 50 hectopascal
- 6 kilopascal = 60 hectopascal
- 7 kilopascal = 70 hectopascal
- 8 kilopascal = 80 hectopascal
- 9 kilopascal = 90 hectopascal
- 10 kilopascal = 100 hectopascal
- 12 kilopascal = 120 hectopascal
- 15 kilopascal = 150 hectopascal
- 20 kilopascal = 200 hectopascal
- 25 kilopascal = 250 hectopascal
- 30 kilopascal = 300 hectopascal
- 50 kilopascal = 500 hectopascal
- 75 kilopascal = 750 hectopascal
- 100 kilopascal = 1,000 hectopascal
- 200 kilopascal = 2,000 hectopascal
- 500 kilopascal = 5,000 hectopascal
- 1000 kilopascal = 10,000 hectopascal
Kilopascal to Hectopascal conversion chart (both directions)
The chart below converts kilopascal to hectopascal and hectopascal to kilopascal side by side, so it works whichever way you need. 1 kilopascal = 10 hectopascal, and 1 hectopascal = 0.1 kilopascal.
| Kilopascal → Hectopascal | Hectopascal → Kilopascal |
|---|---|
| 0.25 kPa = 2.5 hPa | 0.25 hPa = 0.025 kPa |
| 0.5 kPa = 5 hPa | 0.5 hPa = 0.05 kPa |
| 1 kPa = 10 hPa | 1 hPa = 0.1 kPa |
| 2 kPa = 20 hPa | 2 hPa = 0.2 kPa |
| 3 kPa = 30 hPa | 3 hPa = 0.3 kPa |
| 4 kPa = 40 hPa | 4 hPa = 0.4 kPa |
| 5 kPa = 50 hPa | 5 hPa = 0.5 kPa |
| 6 kPa = 60 hPa | 6 hPa = 0.6 kPa |
| 7 kPa = 70 hPa | 7 hPa = 0.7 kPa |
| 8 kPa = 80 hPa | 8 hPa = 0.8 kPa |
| 9 kPa = 90 hPa | 9 hPa = 0.9 kPa |
| 10 kPa = 100 hPa | 10 hPa = 1 kPa |
| 12 kPa = 120 hPa | 12 hPa = 1.2 kPa |
| 15 kPa = 150 hPa | 15 hPa = 1.5 kPa |
| 20 kPa = 200 hPa | 20 hPa = 2 kPa |
| 25 kPa = 250 hPa | 25 hPa = 2.5 kPa |
| 30 kPa = 300 hPa | 30 hPa = 3 kPa |
| 40 kPa = 400 hPa | 40 hPa = 4 kPa |
| 50 kPa = 500 hPa | 50 hPa = 5 kPa |
| 75 kPa = 750 hPa | 75 hPa = 7.5 kPa |
| 100 kPa = 1,000 hPa | 100 hPa = 10 kPa |
| 150 kPa = 1,500 hPa | 150 hPa = 15 kPa |
| 200 kPa = 2,000 hPa | 200 hPa = 20 kPa |
| 250 kPa = 2,500 hPa | 250 hPa = 25 kPa |
| 500 kPa = 5,000 hPa | 500 hPa = 50 kPa |
| 1000 kPa = 10,000 hPa | 1000 hPa = 100 kPa |
Kilopascal vs Hectopascal: which is bigger?
A kilopascal is the larger unit: one kilopascal equals 10 hectopascals. Put another way, you need 10 hectopascals to make a single kilopascal.
What is a Kilopascal? History, origin and usage
The kilopascal came into general use as countries converted their engineering standards to SI through the 1970s and 1980s. Canada, Australia and much of Europe moved tyre-pressure labels and gas-cylinder markings to kPa in that period, which is why a car built for one market often carries a door sticker in kPa and one built for another carries the same number in psi or bar.
Kilopascals are the workaday metric pressure unit: tyre pressures, medical gas supplies, water systems, ventilation and most mechanical engineering specifications. A car tyre is typically inflated to somewhere around 200 to 250 kPa.
One kilopascal is 1,000 pascals, and 100 kilopascals is very nearly one atmosphere — which is a useful mental shortcut, though the exact figure is 101.325 kPa, not 100.
What is a Hectopascal? History, origin and usage
The hectopascal was adopted by weather services in the 1980s for a very practical reason: it is exactly the same size as the millibar they had been using since the 1900s. Switching to an SI-based name therefore changed nothing on the charts. A forecast that used to read 1013 mb reads 1013 hPa, digit for digit, so decades of records stayed directly comparable.
Hectopascals are the standard unit for atmospheric pressure in weather reports and aviation across most of the world. Sea-level pressure normally sits between about 980 hPa in a deep storm and 1040 hPa in a strong high-pressure system.
"Hecto" means a hundred, so a hectopascal is 100 pascals. It is one of the very few places where the hecto prefix survives in everyday use — almost everywhere else the SI world jumps straight from the base unit to kilo.
Convert 1 Kilopascal to other units
It can help to see a kilopascal next to the other units it is commonly compared with. One kilopascal (kPa) is equal to:
| 1 Kilopascal equals | Unit |
|---|---|
| 1,000 Pa | Pascal |
| 10 hPa | Hectopascal |
| 0.001 MPa | Megapascal |
| 10 mbar | Millibar |
| 0.01 bar | Bar |
| 0.009869233 atm | Standard atmosphere |
| 7.500617 Torr | Torr |
| 7.500616 mmHg | Millimetre of mercury |
| 0.2952998 inHg | Inch of mercury |
| 101.9716 mmH₂O | Millimetre of water |
| 4.014631 inH₂O | Inch of water |
| 0.1450377 psi | Pound per square inch |
| 0.01019716 kgf/cm² | Kilogram-force per square centimetre |
Convert 1 Hectopascal to other units
One hectopascal (hPa) is equal to:
| 1 Hectopascal equals | Unit |
|---|---|
| 100 Pa | Pascal |
| 0.1 kPa | Kilopascal |
| 0.0001 MPa | Megapascal |
| 1 mbar | Millibar |
| 0.001 bar | Bar |
| 0.0009869233 atm | Standard atmosphere |
| 0.7500617 Torr | Torr |
| 0.7500616 mmHg | Millimetre of mercury |
| 0.02952998 inHg | Inch of mercury |
| 10.19716 mmH₂O | Millimetre of water |
| 0.4014631 inH₂O | Inch of water |
| 0.01450377 psi | Pound per square inch |
| 0.001019716 kgf/cm² | Kilogram-force per square centimetre |
Tips for converting Kilopascal to Hectopascal
- To go from kilopascal to hectopascal, multiply by 10; to go back, divide by 10 (or multiply by 0.1).
- For a quick mental estimate, remember that 1 kilopascal ≈ 10 hectopascal, so 10 kilopascal ≈ 100 hectopascal.
- The converter above keeps full precision; the tables round for readability, so use the tool for exact figures.
- Both fields update live as you type — change either side to convert in that direction.
How to use this Kilopascal to Hectopascal converter
Type a number into the Kilopascal field and the equivalent in Hectopascal appears instantly — there is no “convert” button to press and nothing is sent to a server, so it works offline once the page has loaded and is safe for any data. You can also type into the Hectopascal field to convert the other way (hectopascal to kilopascal). Use the swap control to flip the two units, and copy the result with a single click. Because the calculation runs in your browser with full floating-point precision, the converter is more exact than the rounded figures shown in the reference chart above — use the chart for quick look-ups and the tool for precise work.
Accuracy and method
Every figure on this page — the formula, the worked examples, the conversion chart and the “convert to other units” tables — is computed from a single verified conversion factor (1 kPa = 10 hPa), never copied from a hand-typed lookup table that could drift. That factor is derived from each unit’s definition in terms of a common base unit, and an automated check re-verifies all of the site’s factors on every update, so the numbers here stay correct over time. This matters for kilopascal-to-hectopascal conversions because a small rounding error in a published table compounds quickly at larger quantities; computing from the exact factor avoids that.
Sources
- BIPM — The International System of Units (SI Brochure) — the defining document for the SI, published by the International Bureau of Weights and Measures. It fixes the base unit that this conversion resolves to, which is why the factor here can be exact rather than approximate.
- NIST — Definitions of the SI base units — the US National Institute of Standards and Technology reference for the SI base units, used here as an independent cross-check on the base-unit definition.
Pressure factors here come from fixed definitions, anchored to the pascal: a bar is exactly 100,000 Pa, one atmosphere is exactly 101,325 Pa, a torr is exactly a 760th of an atmosphere, and psi is built from the exact pound and the exact inch. Two of them — psi and the torr — work out to decimals that repeat forever, so where a number is shown rounded it is marked, not quietly trimmed.
Frequently asked questions
- How many hectopascal are in 1 kilopascal?
- 1 kilopascal = 10 hectopascal (hPa). To convert any number of kilopascal to hectopascal, multiply by 10.
- How do I convert kilopascal to hectopascal?
- Multiply the number of kilopascal by 10. For example, 10 kilopascal = 10 × 10 = 100 hectopascal, and 25 kilopascal = 250 hectopascal.
- How many kilopascal are in 1 hectopascal?
- 1 hectopascal = 0.1 kilopascal. So to convert hectopascal back to kilopascal, multiply by 0.1.
- What is the formula to convert kilopascal to hectopascal?
- hectopascal = kilopascal × 10. The reverse formula is kilopascal = hectopascal × 0.1.
- How much is 100 kilopascal in hectopascal?
- 100 kilopascal = 1,000 hectopascal. (And 1000 kilopascal = 10,000 hectopascal.)
- Which is bigger, a kilopascal or a hectopascal?
- A kilopascal is larger: 1 kilopascal = 10 hectopascal.
- Is this kilopascal to hectopascal converter accurate?
- Yes — every value is computed from the exact 10 hPa per kPa factor (not rounded look-up tables), and the factors are re-verified automatically on every update.
- Can I convert hectopascal to kilopascal too?
- Yes. The converter works both ways — enter a value in either field. 1 hectopascal = 0.1 kilopascal.