A decision matrix lays your options down one axis and your criteria down the other, so you can rate every option against every criterion instead of eyeballing the whole thing at once. The tool multiplies each rating by how much that criterion matters and totals a score per option.
Use it when you're picking between three or more options that each have several things going for and against them — a home, a job offer, a vendor, a school — and you keep flip-flopping because you're comparing them one feature at a time instead of as a whole.
Don't use it when you only have two options and one obviously dominates the other, or when your criteria themselves are the real disagreement — if you and a partner can't agree on how much to weight commute versus space, the matrix won't settle that fight, it'll just relocate it into the weight column. It also breaks down if you pad the criteria list past what actually matters, since junk categories dilute a score that should be driven by three or four real priorities.
A small team is choosing between three office spaces. They set four criteria — rent, commute for staff, natural light, and lease length — and weight commute heaviest since half the team relies on transit. Space A has the best light but a brutal commute for most of the team. Space B is dark but cheap and central. Space C is a compromise on everything. Once weighted, B wins clearly, even though A would have won on a simple show of hands.
The tool below is free and needs no account. Nothing you type leaves your browser unless you save it.
The classic, fixed: big reasons outweigh many small ones.
3 min · any yes/no decisionChoosing between options? Score what matters, get a winner.
4 min · jobs, homes, purchasesFlip it — then notice which side you were rooting for.
30 sec · when you secretly already knowHow will this feel in 10 minutes, 10 months, 10 years?
2 min · emotional decisionsPlay the decision forward. The second consequence is usually the opposite of the first.
3 min · tempting shortcuts & habitsIt's a year later and it failed. Write why — before it can.
4 min · big plans & launchesStop asking how to succeed. List how you'd guarantee failure — then stop doing those.
3 min · goals that keep stallingEvery plan rests on a guessed number. How wrong can you afford that guess to be?
2 min · budgets, timelines, runwayPeople don't do what you want. They do what they're rewarded for. Find out which.
3 min · plans that need other peopleSort your constraints into what's actually true and what's just how it's done.
4 min · "that's impossible" problemsAsk your 80-year-old self. They're surprisingly clear.
1 min · leaps & life changesReversible? Then stop deliberating and go find out.
45 sec · over-thinking small stakesYour own problem, one why at a time, until you hit something you can change.
5 min · the thing that keeps coming backPrefer to train the thinking behind these instead of reaching for a tool each time? The frameworks are explained free, and one drill takes about a minute.