Built to solve real problems, one calculation at a time.
Free, browser-based tools for grades, unit conversions, and research calculations — built for agriculture students and researchers who need fast, transparent answers, with every formula shown, not hidden.
All Tools & Calculators
Free tools for agriculture, soil science, academic work and everyday calculations — no sign-up required.
Grades Tool
Calculate your GPA from courses, convert grades between CGPA, GPA, percentage, WAM, UK classification and more, and convert credit hours to ECTS for European applications.
Scientific Unit Converter
Convert mass, area, volume, pressure, concentration, GHG flux, elemental-to-oxide nutrients, application rates, and soil bulk density — ten categories in one tool.
Fertilizer Calculator for Research Trials
Calculate exact fertilizer amounts for field plots, pot trials, or incubation jars, with multi-nutrient handling across 28 real fertilizer products.
High School GPA Calculator
Work out your high school GPA from your course grades and credits, so you know where you stand before you apply to college or university.
Mean, Median & Mode Calculator
Paste in a set of numbers and get the mean, median and mode in one step. Useful for quick checks on trial data, survey results and homework.
Scientific Calculator
A free online scientific calculator for coursework, lab calculations and everyday maths, right in your browser with nothing to install.
Mulch Calculator
Estimate how much mulch you need for a garden bed or landscape area, so you buy the right amount the first time.
Grow a Garden Calculator
A quick calculator to plan and work out the numbers for your garden. Open it, enter your values and get your result instantly.
Hourly to Salary Calculator
Convert an hourly wage into an annual, monthly or weekly salary, handy when comparing job offers or planning a career move.
Free Online Calculators Built for Agriculture
This page brings together free online calculators for agriculture students, researchers and growers. Each tool solves a real task, from converting soil units to working out your GPA. Everything runs in your browser, so there is nothing to install.
Why Agriculture Needs Good Tools
Modern farming runs on data. Precision agriculture, drones and IoT sensors now give growers real-time information about their fields. As a result, students and researchers need practical tools as well as field knowledge.
Climate change adds to the pressure. Researchers must understand how it affects crops, and how sustainable and regenerative practices can help. Our fertilizer and unit conversion tools support that work. They save time on routine calculations, so you can focus on the research itself.
Tools for Students and Careers
Agriculture is still one of the world’s most important career paths. Many students are choosing between a diploma, a degree and a research role. For example, the GPA tools help you track your progress and prepare applications. The high school GPA calculator is useful if you are planning your next step. In addition, the hourly to salary calculator helps you compare job offers.
Tools for Gardens and Everyday Maths
Not every task is research. The mulch calculator and the grow-a-garden calculator help with real garden planning, not the mobile game of the same name. Meanwhile, the scientific calculator and the mean, median and mode calculator handle everyday maths and basic statistics.
We are still building this page. Next, we are working on a land tax calculator for Australia, for agricultural land and property research.
Check back soon, or bookmark this page. We add new tools regularly.