Family Law calculators

49 live family law calculators inside Legal & Law on The Online Calculator 24. Every engine shows its formula, the worked steps behind the default figures, and the standard or dataset the method comes from.

Live Family Law tools

• Child Support (Income Shares) Calculator — The Child Support — Income Shares Calculator works out monthly child support payment from your parent 1 monthly net income, parent 2 monthly net income, number of children, p1 overnights per year and work-related childcare. It also reports combined income, parent 1 share and basic obligation, with the formula and every step shown.
• Child Support (Percentage) Calculator — Estimate child support under a percentage-of-income model — a fixed share of the paying parent's income set by the number of children — with the shared-placement offset used in Wisconsin-style formulas.
• Child Support (Melson) Calculator — The true per-unit price of child support (melson), with a like-for-like comparison against a second option — the number invoice totals hide.
• Spousal Support Duration Calculator — The Spousal Support Duration Calculator works out estimated monthly alimony from your payer monthly gross income, recipient monthly gross income, years married and recipient age. It also reports duration, total payments and income replacement, with the formula and every step shown.
• Alimony Amount Calculator — Estimate monthly spousal support using the common guideline approaches — the 30/20 rule and a percentage of the income difference — with the recipient-income cap and duration factors from the Massachusetts Alimony Reform Act.
• Rehabilitative Alimony Calculator — The true per-unit price of rehabilitative alimony, with a like-for-like comparison against a second option — the number invoice totals hide.
• Reimbursement Alimony Calculator — The true per-unit price of reimbursement alimony, with a like-for-like comparison against a second option — the number invoice totals hide.
• Transitional Alimony Calculator — The true per-unit price of transitional alimony, with a like-for-like comparison against a second option — the number invoice totals hide.
• Permanent Alimony Calculator — The true per-unit price of permanent alimony, with a like-for-like comparison against a second option — the number invoice totals hide.
• Alimony Tax Impact Calculator — The share one quantity represents of another — the core reading behind alimony tax impact — with a second value folded in for direct comparison.
• Property Division Calculator — The Marital Property Division Calculator works out net marital estate from your home value, remaining mortgage, total retirement accounts, joint savings and joint debt. It also reports home equity, total gross assets and spouse 1 share, with the formula and every step shown.
• Marital Asset Value Calculator — The honest door-to-door arithmetic for marital asset value: moving time plus the stops that every timetable quietly forgets.
• Separate Asset Value Calculator — The honest door-to-door arithmetic for separate asset value: moving time plus the stops that every timetable quietly forgets.
• Community Property Split Calculator — A transparent linear conversion for community property split: the factor is visible, the arithmetic is shown, and the inverse direction comes free.
• Equitable Distribution Calculator — The size and shape of the move between two figures — total percent, absolute delta and the annualised rate — for equitable distribution.
• Marital Waste Claim Calculator — Activity × factor arithmetic for marital waste claim: the kg CO₂e total, the offset price tag, and the scale marker (trees) that makes tonnes tangible.
• Dissipation of Assets Calculator — The honest door-to-door arithmetic for dissipation of assets: moving time plus the stops that every timetable quietly forgets.
• Pension Division (QDRO) Calculator — The blend for pension division (qdro): weighted mean with the weights shown explicitly, so nobody has to guess whether line one counted.
• Business Valuation Divorce Calculator — The size and shape of the move between two figures — total percent, absolute delta and the annualised rate — for business valuation divorce.
• Goodwill Value (Divorce) Calculator — The share one quantity represents of another — the core reading behind goodwill value (divorce) — with a second value folded in for direct comparison.
• Professional Practice Value Calculator — The size and shape of the move between two figures — total percent, absolute delta and the annualised rate — for professional practice value.
• Stock Option Division Calculator — The size and shape of the move between two figures — total percent, absolute delta and the annualised rate — for stock option division.
• RSU Division Calculator — A transparent linear conversion for rsu division: the factor is visible, the arithmetic is shown, and the inverse direction comes free.
• Debt Division Calculator — The debt division payment, total interest and true cost of borrowing for any principal, APR and term — the same amortisation maths every lender’s disclosure uses.
• Mortgage in Divorce Calculator — The mortgage in divorce payment, total interest and true cost of borrowing for any principal, APR and term — the same amortisation maths every lender’s disclosure uses.
• Home Buyout Calculation Calculator — A transparent linear conversion for home buyout calculation: the factor is visible, the arithmetic is shown, and the inverse direction comes free.
• Refinance After Divorce Calculator — The refinance after divorce payment, total interest and true cost of borrowing for any principal, APR and term — the same amortisation maths every lender’s disclosure uses.
• COLA Adjustment Calculator — The size and shape of the move between two figures — total percent, absolute delta and the annualised rate — for cola adjustment.
• Parenting Time Cost Calculator — The full price tag for parenting time cost: variable spend, one-off costs and an explicit contingency band, with the all-in per-unit figure quotes obscure.
• Child Care Contribution Calculator — The share one quantity represents of another — the core reading behind child care contribution — with a second value folded in for direct comparison.
• Education Contribution Calculator — A transparent linear conversion for education contribution: the factor is visible, the arithmetic is shown, and the inverse direction comes free.
• Healthcare Contribution Calculator — The size and shape of the move between two figures — total percent, absolute delta and the annualised rate — for healthcare contribution.
• Extracurricular Contribution Calculator — The share one quantity represents of another — the core reading behind extracurricular contribution — with a second value folded in for direct comparison.
• Travel Expense Calculator — The full price tag for travel expense: variable spend, one-off costs and an explicit contingency band, with the all-in per-unit figure quotes obscure.
• Guardian ad Litem Cost Calculator — The full price tag for guardian ad litem cost: variable spend, one-off costs and an explicit contingency band, with the all-in per-unit figure quotes obscure.
• Custody Evaluation Cost Calculator — The full price tag for custody evaluation cost: variable spend, one-off costs and an explicit contingency band, with the all-in per-unit figure quotes obscure.
• Mediation Cost Calculator — The full price tag for mediation cost: variable spend, one-off costs and an explicit contingency band, with the all-in per-unit figure quotes obscure.
• Collaborative Divorce Cost Calculator — The full price tag for collaborative divorce cost: variable spend, one-off costs and an explicit contingency band, with the all-in per-unit figure quotes obscure.
• Litigation Cost Calculator — The full price tag for litigation cost: variable spend, one-off costs and an explicit contingency band, with the all-in per-unit figure quotes obscure.
• DIY Divorce Cost Calculator — The full price tag for diy divorce cost: variable spend, one-off costs and an explicit contingency band, with the all-in per-unit figure quotes obscure.
• Prenuptial Agreement Value Calculator — The size and shape of the move between two figures — total percent, absolute delta and the annualised rate — for prenuptial agreement value.
• Postnuptial Agreement Calculator — A transparent linear conversion for postnuptial agreement: the factor is visible, the arithmetic is shown, and the inverse direction comes free.
• Cohabitation Agreement Calculator — The size and shape of the move between two figures — total percent, absolute delta and the annualised rate — for cohabitation agreement.
• Domestic Partnership Value Calculator — Tape-meat body composition for domestic partnership value: the US Navy circumference method — the field standard gyms and physicals actually use — with fat and lean mass in kilograms.
• Annulment Cost Calculator — The full price tag for annulment cost: variable spend, one-off costs and an explicit contingency band, with the all-in per-unit figure quotes obscure.
• Legal Separation Cost Calculator — The full price tag for legal separation cost: variable spend, one-off costs and an explicit contingency band, with the all-in per-unit figure quotes obscure.
• Modification Cost Calculator — The full price tag for modification cost: variable spend, one-off costs and an explicit contingency band, with the all-in per-unit figure quotes obscure.
• Enforcement Cost Calculator — The full price tag for enforcement cost: variable spend, one-off costs and an explicit contingency band, with the all-in per-unit figure quotes obscure.
• Contempt Penalty Calculator — The share one quantity represents of another — the core reading behind contempt penalty — with a second value folded in for direct comparison.

Reading a Family Law result

A number on its own is the weakest thing a calculator can give you, so these tools pair each output with the comparison that gives it meaning: the gap to a target, the band the value falls in, or what a realistic swing in one input does to the answer. When a figure looks wrong, that is usually the fastest place to check — re-run it with one input moved and see whether the change lines up with the formula printed above the result.

Related sub-topics in Legal & Law

• Personal Legal — 50 live tools.
• Business Legal — 50 live tools.