Angle converter
Converting radians to gradians is a small, specific task, but getting it wrong by even a rounding error can throw off a recipe, a shipping quote, a construction cut list, or a homework answer. This page runs a live Radians to Gradians converter — type a number in rad and get the exact grad equivalent instantly, calculated with the standard conversion factor rather than an approximation. One rad equals 63.66197778 grad, and the calculator below scales that ratio to any amount you enter.
To convert a value from radians to gradians, multiply the number of rad by 63.66197778. That figure comes from expressing both units against the same reference — in this case, angle are compared through a common angle base unit — so the ratio holds no matter how large or small the input is.
Common rad amounts and their grad equivalents, rounded to six decimal places for accuracy:
Angle conversions come up constantly outside of a classroom. Recipes written for a US audience use units while international ones use metric measurements; travel and navigation mix miles, kilometers, and nautical units depending on the country and mode of transport; and technical fields like engineering, medicine, and manufacturing often require converting between systems to match a spec sheet, a prescription, or a purchase order.
Manual conversion is where mistakes creep in — misplacing a decimal, using an outdated or rounded factor, or mixing up which unit is larger. Because this converter applies the exact multiplier every time, the result for radians to gradians is consistent whether you're converting a single small number or a large batch of values one at a time.
1 rad equals 63.66197778 grad. Multiply any rad value by this factor to get grad.
It uses the standard defined conversion factor for radians and gradians, so results are precise to the rounding shown, not a rough estimate.
Yes — use the swap control in the calculator to reverse the direction and convert gradians into radians instead.
No. The calculation runs locally in your browser using JavaScript, so nothing you type is sent anywhere.
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| Radians | Gradians |
|---|---|
| 1 rad | 63.661978 grad |
| 5 rad | 318.309889 grad |
| 10 rad | 636.619778 grad |
| 25 rad | 1591.549444 grad |
| 50 rad | 3183.098889 grad |
| 100 rad | 6366.197778 grad |
| 500 rad | 31830.988889 grad |
| 1000 rad | 63661.977778 grad |