Percent and degrees

Pie Chart Calculator

Divide each value by the total. Multiply by 100 for its percent and by 360 for its degrees, so 300 out of 1,200 is 25% and 90 degrees. Type your values below to get every slice at once, with no sign-up.

Free to use ($0), no account. Updated November 9, 2026.

Your values

Total: 1200. Percents and degrees are rounded to one decimal place.
SliceValuePercentDegrees
Rent60050%180°
Food30025%90°
Transport20016.7%60°
Other1008.3%30°

How do you work out a pie chart by hand?

  1. Add every value to get the total. For 600, 300, 200 and 100, the total is 1,200.
  2. Divide one value by the total. 300 ÷ 1,200 = 0.25.
  3. Multiply by 100 for the percent: 0.25 × 100 = 25%.
  4. Multiply by 360 for the degrees: 0.25 × 360 = 90 degrees.
  5. Repeat for each slice. The percents add to 100 and the degrees add to 360, give or take rounding.

Can I watch the steps?

Yes. This video works through the same example in under three minutes.

How many slices should a pie chart have?

Fewer than most people expect. Of 17,002 charts downloaded from our maker between January 29 and October 23, 2026, 69.1% had between two and five slices, and the most common count was 5 (20%). Source: this site's anonymous download log, read through our pie chart statistics. When a slice falls under about 5 degrees it is hard to see, so group the smallest ones into Other.

How do you turn the numbers into a chart?

Type the same labels and values into the percentage pie chart maker to download a PNG, JPEG, SVG or PDF, or use the circle graph maker to see each angle for homework you draw by hand. For a single share of a whole, the percentage circle generator draws one ring.

Pie Chart Calculator Questions

Sources (read November 9, 2026)

  • Pie chart, Wikipedia: each slice's arc length, and so its central angle, is proportional to the quantity it represents.
  • Our pie chart statistics: slice counts from this site's anonymous download log, 17,002 charts, January 29 to October 23, 2026.