Free Ontario Legal Calculators
Legal problems almost always start with a money question. How much child support will I pay? What’s my claim really worth? How much will this ticket cost me once insurance goes up? When can I clear my record? How much can my landlord raise the rent? Our free Ontario legal calculators are built to answer these questions instantly — no cost, no sign-up, and no obligation. Each tool is grounded in the actual rules that apply in Ontario, so instead of guessing, you get a realistic estimate you can plan around and bring to your first consultation.
We’ve organized dozens of calculators into five practice areas so you can go straight to what you need. Every tool is free to use, works on any device, and keeps your inputs private.
Explore Calculators by Category
Family Law Calculators
Estimate child and spousal support under the Federal Child Support Guidelines and the Spousal Support Advisory Guidelines, plus property equalization, divorce cost, and parenting-time percentages. Start with the Family Law Calculators.
Small Claims Court Calculators
Work out your claim value, pre- and post-judgment interest, filing fees, cost recovery, and your limitation deadline for disputes up to $50,000. Start with the Small Claims Court Calculators.
Traffic Ticket Calculators
See the full cost of a ticket — fine, victim surcharge, demerit points, insurance impact, and suspension risk — under Ontario’s Highway Traffic Act, including the stunt driving threshold. Start with the Traffic Ticket Calculators.
Criminal Law Calculators
Check record suspension (pardon) eligibility, discharge and diversion availability, youth vs. adult court, case timelines, and parole dates under the Criminal Records Act, Criminal Code, and Youth Criminal Justice Act. Start with the Criminal Law Calculators.
Landlord & Tenant Calculators
Calculate compliant rent increases, last month’s rent deposit interest, prorated rent, eviction timelines, and compensation under the Residential Tenancies Act — for landlords and tenants alike. Start with the Landlord & Tenant Calculators.
Why Use Ontario-Specific Legal Calculators
Legal rules are provincial, and the numbers change at the border. A national or U.S. estimator won’t know Ontario’s child support tables, its quarterly interest rate, its $50,000 Small Claims ceiling, its Highway Traffic Act fine brackets, or its annual rent increase guideline. Our calculators are built specifically around those rules, so the estimate you get reflects how an Ontario court, tribunal, or board would actually approach your situation.
- Built on Ontario & federal law — the same guidelines and statutes professionals rely on.
- Completely free and private — no account, no payment, and no personal information required.
- Instant, plain-language results — a clear number with the reasoning behind it.
- A smarter first consultation — walk in already knowing your range.
From Estimate to Action
A calculator can tell you the likely number, but it can’t weigh the specific facts of your case, exercise a judge’s discretion, or build the strategy that gets you the best outcome. That’s where our team comes in. Once you’ve run the numbers, our Ontario lawyers and licensed paralegals can review your full situation and turn an estimate into an enforceable agreement, a filed claim, a strong defence, or a completed application — often starting with a free, no-obligation consultation.