My Inflation Calculator: Your Personal Inflation Rate vs 3.7% CPI (September 2026) and 3.19% Nowflation Realtime (Oct 18)

Reweight the Nowflation CPI Gauge's 3.45% basket to your life — renter or owner, how much you drive, eat out, healthcare use, tuition — and localize electricity and piped gas to your state. Same public component data, transparent multipliers.

What this page measures

The official CPI weights one basket for everyone; nobody buys exactly that basket. This page takes the same 21 Nowflation components behind the Gauge — each with its October 2026 weight and year-over-year change — and reweights them to five answers about your life, so the number it returns is your inflation rate computed from the same public component data, not a new model. Summing weight × year-over-year change across the components with the official weights gives 3.32% for October 2026 — the page's reference figure, and the one every profile below is compared with. The Nowflation CPI Gauge (3.45%) aggregates the same components on the BLS December chain, where a component counts in proportion to its weight and its price change since December, so a component whose price has risen fast since December counts for more there than in this fixed-weight average; today the Gauge minus this average is +0.13pp. Both price the owners'-equivalent weight on the all-tenant rent index, so a renter's basket and the average one differ only through the other answers.

The five questions and what each one does to the weights

After the multipliers the weights are renormalized to 100% and applied to every monthly frame back to 2018, so the page shows your rate through time, not only today. The multipliers are deliberately simple and documented; the page calls itself an approximation, and it is one.

Five example baskets for October 2026

ProfilePersonal inflation ratevs the official basket
Renter, average driver, average dining and healthcare, no tuition (the page default)3.32%0.00pp
Owner with a mortgage, heavy commuter4.56%+1.24pp
Owner, home paid off, mostly cooks, light healthcare use3.66%+0.34pp
Renter who does not drive, eats out a lot, paying tuition2.36%-0.96pp
Heavy healthcare use, otherwise average3.22%-0.10pp

For the default profile the largest contributions come from Motor Fuel (2.9% of the basket at 40.16%, +1.16pp), Shelter: Rent (34.0% of the basket at 1.97%, +0.67pp), Food Away (5.4% of the basket at 3.46%, +0.19pp), Transportation Services (6.3% of the basket at 2.77%, +0.18pp), Food at Home (8.3% of the basket at 1.77%, +0.15pp).

Localizing utilities and fuel to your state

The second step swaps the national electricity and piped-gas readings for your state's EIA residential rates (the AAA state pump prices do not have a year of history yet, so motor fuel stays national), weighted by your basket, and reports the difference in percentage points. In July 2026 (EIA, the latest month), residential electricity was rising fastest in Hawaii (+21.9%), New Hampshire (+16.7%), Maine (+15.8%) and slowest in Connecticut (-12.5%), Louisiana (-3.0%), Utah (-2.5%); regular gasoline (AAA, October 18, 2026) is dearest in California ($6.18), Hawaii ($5.64), Nevada ($5.4) and cheapest in North Carolina ($3.62), Georgia ($3.74), Texas ($3.79). The full state ranking is on the inflation-by-state page.

How this relates to the Gauge and the CPI

The national Gauge (3.45%) is this calculation with the official weights and the live-priced components; the official CPI (3.7% for September 2026) is the same basket priced by the BLS survey with its shelter lag. Your number differs from both for one reason only — the weights — which is why the page shows the contribution of each component rather than a single figure.

Terms on this page

Owners' equivalent rent (OER)
OER is the CPI's measure of housing costs for homeowners: what an owner would pay to rent their own home, imputed from the rents of comparable rental units in the BLS rent panel rather than from mortgage payments or house prices. It is the single largest CPI component, which is why the rent panel's six-month repricing cycle matters so much for headline inflation.
All-tenant rent index
The Nowflation CPI Gauge's shelter measure: new-lease rents from Zillow and Apartment List averaged over the trailing 48 months of leases with weights that decay at the lease-turnover rate, so it reflects what the whole renting population pays this month rather than only the marginal tenant signing a lease. The Gauge uses it as measured on both the rent and the owners'-equivalent weight; its lead over the official rent index is tested separately.
The gap
The difference between the Nowflation CPI Gauge and the latest official CPI print, in percentage points. Over time its largest structural source is shelter timing — rents measured this month versus a survey that reprices each unit every six months — while on a given day live pump and vehicle prices can move it more; it changes sign, and the gap page breaks today's figure down component by component. Nowflation Realtime has its own gap to CPI, shown on its page.
Basket weight
The share of spending a component represents; the BLS publishes one set for the average urban consumer, and this page rescales it to your answers.
Contribution
A component's weight multiplied by its year-over-year change, in percentage points — the part of your rate that component explains.

Zillow data: Data Provided by Zillow Group.