Home › Maths & Statistics Calculators

Maths & Statistics Calculators

This page lists every maths and statistics calculator on Calculate.co.nz, built for students, teachers and anyone who needs a fast, accurate answer with the working shown. Solve quadratics, work through algebra and geometry, calculate area, volume and trigonometry, or run statistics from mean, median and standard deviation through to confidence intervals, regression and the major probability distributions. Many tools are aligned with NCEA Levels 1 to 3 and show the steps, not just the result. Every calculator is free and needs no sign-up. Pick a tool from the list below to get started, and follow the related links on each page for related methods and worked examples.

97 free calculators in this category

Chi-Square Test of Independence Calculator Paired t-Test Calculator One-Way ANOVA Calculator Pearson Correlation Calculator Linear Regression Calculator Confidence Interval for a Mean Calculator Margin of Error Calculator Poisson Probability Calculator Permutations and Combinations Calculator Z-Score and Percentile Calculator Spearman Rank Correlation Calculator Mann-Whitney U Calculator One-Sample t-Test Calculator Z-Test for a Proportion Calculator Binomial Confidence Interval Calculator Cohen's d Effect Size Calculator Sample Size for a Proportion Calculator Trimmed Mean Calculator Moving Average Calculator Pooled Standard Deviation Calculator Grouped Standard Deviation Calculator Chi-Square Goodness of Fit Calculator Two-Sample t-Test Calculator Linear Interpolation Calculator Modular Exponentiation Calculator GCD & LCM of a List Calculator Matrix Multiplication Calculator (2x2) Vector Projection Calculator Combinations with Repetition Calculator Poisson Confidence Interval Calculator Exponential Growth & Decay Calculator Logistic Growth Calculator Newton's Method Calculator Numerical Integration Calculator Eigenvalue Calculator (2x2) Dot Product Calculator Odds & Probability Converter Bayes' Theorem Calculator Coefficient of Variation Calculator Geometric Distribution Calculator Confidence Interval for a Proportion Calculator Geometric Mean Calculator Weighted Average Calculator Partial Fractions Calculator Polynomial Roots Calculator (Cubic) Cross Product Calculator 3x3 Determinant Calculator Arc Length & Sector Area Calculator Continued Fraction Calculator Covariance Calculator Five Number Summary Calculator Harmonic Mean Calculator Matrix Calculator (2x2) Vector Calculator Complex Number Calculator Fibonacci Sequence Calculator Arithmetic & Geometric Sequence Calculator Factoring Calculator Law of Sines & Cosines Calculator Percentile Calculator Quartile & IQR Calculator Correlation Coefficient Calculator Modulo Calculator nth Root & Cube Root Calculator Inverse Trig Calculator Standard Error Calculator Final Exam Mark Needed Calculator Test Score Percentage Calculator Area Calculator Area of a Triangle Calculator Combination (nCr) Calculator Confidence Interval Calculator Decimal to Fraction Calculator Definite Integral Calculator Degrees to Radians Calculator Derivative Calculator Distance Formula Calculator Hypotenuse Calculator Integral Calculator Limit Calculator Mean Median Mode Range Calculator Midpoint Calculator Minecraft Circle Generator Normal Distribution Calculator Percent Error Calculator Percentage Calculator Permutation (nPr) Calculator Prime Factorization Calculator Sample Size Calculator Scientific Notation Calculator Significant Figures Calculator Sine Cosine Tangent Calculator System of Equations Solver Triangle Calculator Trig Calculator Volume Calculator Z-Score Calculator

If you've found a bug, or would like to contact us, or learn more about James Graham and Calculate.co.nz.

Calculate.co.nz is partnered with Interest.co.nz for New Zealand's highest quality calculators and financial analysis.

All calculators and tools are provided for educational and indicative purposes only and do not constitute financial advice.

Calculate.co.nz is proudly part of the Realtor.co.nz group, New Zealand's leading property transaction literacy platform, helping Kiwis understand the home buying and selling process from start to finish. Whether you're a first home buyer navigating your first property purchase, an investor evaluating your next acquisition, or a homeowner planning to sell, Realtor.co.nz provides clear, independent, and trustworthy guidance on every step of the New Zealand property transaction journey.

Calculate.co.nz is also partnered with Health Based Building and Premium Homes to promote informed choices that lead to better long-term outcomes for Kiwi households.

Calculate.co.nz is hosted in Auckland via SiteHost new Zealand.

All content on this website, including calculators, tools, source code, and design, is protected under the Copyright Act 1994 (New Zealand). No part of this site may be reproduced, copied, distributed, stored, or used in any form without prior written permission from the owner.

About & trust: Why Calculate is NZ's most comprehensive · By the Numbers · How we compare · Editorial standards · How we keep data current · NZ finance glossary · Research & data · Financial literacy NZ · About

Reviewed and maintained. Last reviewed 2026-06-05 and checked on a twice-monthly cycle against IRD, RBNZ and Stats NZ. How we keep data current.

© 2019 to 2026 Calculate.co.nz. All rights reserved.