Scientific calculator
Runs in this tab. Nothing is uploaded.
How to use this tool
Work out sums with trig, logs, powers and percentages. Nothing is uploaded.
Type or tap the sum
Type an expression such as 2 × (3 + 4) or sin(30), or use the keys. The result shows as you type.
Pick degrees or radians
DEG/RAD sets the angle unit for sin, cos and tan. % divides by 100 and Ans is the last result.
Keep and reuse results
Press = or Enter to add the sum to History. Tap a past sum to edit it, or Copy result to paste it.
FAQ
How do I use the scientific calculator?
Type a sum or tap the keys, for example 2 × (3 + 4) or sin(30). The result shows as you type; press = or Enter to keep it in the history.
Degrees or radians?
The DEG/RAD button switches the angle unit for sin, cos, tan and their inverses. It starts in degrees, so sin(30) is 0.5.
In what order does it calculate?
Brackets first, then powers and factorials, then × and ÷, then + and −. −2^2 is −4, and 2π or 3(4 + 1) multiply without a × sign.
How does % work?
% divides by 100: 50% is 0.5 and 200 × 15% is 30. Ans stands for the last result, so you can carry on from it.
Is my history saved?
The last 20 sums are kept in this browser only, so they are there next time. Clear history removes them. Nothing is sent anywhere.