# Math

Browse 502 online math tools for working with math operations, data, and files in your browser. Text inputs are not stored, and uploaded files are deleted after 6 hours.

> Canonical page: https://elysiatools.com/en/tags/math

## Overview

Explore 502 Math tools for processing, converting, validating, and managing math-related data and files through a browser-based interface, with no software installation required.

## Frequently asked questions

### What can I do with Math tools?

Math tools help you work with math-related operations, data, and files through a browser-based interface.

### Do I need to install software to use these tools?

No software installation is required. You can operate the tools in your browser while processing runs on Elysia Tools servers.

### How is my data handled?

Text inputs are not stored. Uploaded files are automatically deleted after 6 hours, and processing runs on Elysia Tools servers.

## Tools

- [Absolute Value Calculator](https://elysiatools.com/en/tools/absolute-value-calculator): Calculate the absolute value of positive, negative, or decimal numbers and explain the sign relationship
- [Acre to Hectare](https://elysiatools.com/en/tools/acre-to-hectare): Convert acres to hectares with configurable decimal precision
- [Acre to Square Feet](https://elysiatools.com/en/tools/acre-to-square-feet): Convert acres to square feet with configurable decimal precision
- [Acre to Square Meter](https://elysiatools.com/en/tools/acre-to-square-meter): Convert acres to square meters with configurable decimal precision
- [Active Earth Pressure (Rankine)](https://elysiatools.com/en/tools/active-earth-pressure): Calculate the Rankine active earth pressure on a smooth vertical wall backfilled with cohesionless soil. K_a = tan²(45°−φ/2). Optional uniform surcharge q. Returns the base pressure p₀, the total force P, and the resultant height.
- [Adjusted R-Squared Calculator](https://elysiatools.com/en/tools/adjusted-r-squared-calculator): Calculate adjusted R squared from R squared, sample size, and predictor count
- [RLC Admittance Calculator (Y = G + jB)](https://elysiatools.com/en/tools/admittance-calculator): Compute complex admittance Y = 1/Z = G + jB for series or parallel RLC circuits: G = R/|Z|², B = −X/|Z|². Returns conductance, susceptance, magnitude and phase angle. Supports any subset of R/L/C.
- [AHU Coil Capacity Calculator (Cooling / Heating)](https://elysiatools.com/en/tools/ahu-capacity-calculator): Compute the total, sensible, and latent capacity of an air-handling-unit (AHU) coil from the entering/leaving air state and the dry-air mass flow ṁ_da. Total capacity Qt = ṁ_da·(h1 − h2); sensible capacity Qs = ṁ_da·cp_ma·(T1 − T2) with cp_ma ≈ 1.006 + 1.86·W \[kJ/(kg da·K)\]; latent capacity Ql = Qt − Qs; Sensible Heat Ratio SHR = Qs / Qt. Each state is described by dry-bulb T plus one humidity input (relative humidity φ, or humidity ratio W); W is derived from the Magnus saturation fit when RH is supplied, and enthalpy h = 1.006·T + W·(2501 + 1.86·T) \[kJ/kg da\]. Signed result — works for cooling or heating coils.
- [AI Math Solver/Photomath](https://elysiatools.com/en/tools/ai-math-solver): Solve math problems from images using AI vision models with step-by-step explanations
- [Air Changes per Hour (ACH, n = Q/V)](https://elysiatools.com/en/tools/air-changes-per-hour): Compute the air change rate (ACH / n) of a room from the outdoor supply airflow Q and the room volume V: n = Q/V (1/h). Three modes: solve ACH (given Q and V), solve airflow (given n and V), or solve volume (given n and Q). Flow in m³/s/m³/h/CFM, volume in m³/ft³/L. Also reports the well-mixed single-zone purge time to reach a target residual fraction ε (default 1%): t = −ln(ε)/n hours.
- [Angle Unit Converter](https://elysiatools.com/en/tools/angle-converter): Convert between different angle units (degrees, radians, gradians, minutes, seconds, etc.)
- [ANOVA Calculator](https://elysiatools.com/en/tools/anova-calculator): Run one-way ANOVA across multiple groups and inspect sums of squares, F statistic, and p-value
- [Antilog Calculator](https://elysiatools.com/en/tools/antilog-calculator): Calculate antilogarithms for any valid base and optionally verify the result by applying the logarithm again
- [Arcminutes to Degrees](https://elysiatools.com/en/tools/arcminutes-to-degrees): Convert arcminutes to degrees with configurable decimal precision
- [Arcseconds to Degrees](https://elysiatools.com/en/tools/arcseconds-to-degrees): Convert arcseconds to degrees with configurable decimal precision
- [Area Unit Converter](https://elysiatools.com/en/tools/area-converter): Convert between different area units (square meters, square feet, acres, hectares, etc.)
- [Arithmetic Sequence Calculator](https://elysiatools.com/en/tools/arithmetic-sequence-calculator): Calculate the nth term, first terms, and finite sum of an arithmetic sequence
- [ATM to KPa](https://elysiatools.com/en/tools/atm-to-kpa): Convert standard atmospheres to kilopascals with configurable decimal precision
- [Average Calculator](https://elysiatools.com/en/tools/average-calculator): Compare arithmetic, geometric, and harmonic averages for a numeric dataset in one place
- [Bar to KPa](https://elysiatools.com/en/tools/bar-to-kpa): Convert bar to kilopascals with configurable decimal precision
- [Bar to PSI](https://elysiatools.com/en/tools/bar-to-psi): Convert bar to pounds per square inch with configurable decimal precision
- [Base-N Radix Converter](https://elysiatools.com/en/tools/base-n-radix-converter): Convert numbers and text between any radix from 2 to 36, with custom alphabets and presets for Base58, Base62, and Crockford Base32.
- [Basic Calculator](https://elysiatools.com/en/tools/basic-calculator): Perform basic arithmetic calculations with support for multiple operations
- [Bayes Theorem Calculator](https://elysiatools.com/en/tools/bayes-theorem-calculator): Calculate posterior probability P(A given B) using prior, likelihood, and false-positive rate

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