Sumyard

Scientific calculator

Evaluate powers, roots, logs and trigonometry in degrees or radians.

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Your inputs

Updates as you type
Functions: sin, cos, tan, asin, acos, atan, sqrt, cbrt, ln, log, exp, abs, floor, ceil. Constants: pi, e.

result

1

Functions are parsed by an explicit expression grammar.

Calculations happen in your browser. Saving is optional.

How to use this tool

Enter an expression with explicit multiplication and supported functions such as sqrt, sin and log.

Choose degrees or radians before using trigonometry. Log is base 10; ln is the natural logarithm.

Parentheses/functions → powers → multiplication/division → addition/subtraction

Worked example

1 · result

Fixed example using the settings below. Monetary examples use USD; dates and times use their stated reference values. This example stays unchanged when you edit your calculation.

Example inputs
  • Expression: sin(30)^2 + cos(30)^2
  • Angle mode: Degrees

Method illustration: sin(30)^2 + cos(30)^2 = 1 in degrees.

Assumptions and limits

  • Use explicit multiplication: 2*pi, not 2pi. Log is base 10; ln is natural log. Only finite real results are supported.
  • Percent is postfix division by 100. Calculations use floating-point precision.

Check or report a result

Check the units, selected calculation and assumptions first. Compare the fixed example above with your inputs to identify what changed.

Report a calculation issue with the page address, hypothetical inputs, result displayed and result expected. Do not include passwords, bank details or other private information.