About New Media Fellows

New Media Fellows is a working library of measurement and planning tools for marketing — the online metrics everyone needs, and the offline math (sponsorship, events, out-of-home, sampling) that almost nobody has built free tools for.

Three rules every tool follows

1. More than one way to the answer

Most marketing questions have several legitimate calculation methods that disagree. We show 2–4 models side by side with the spread, instead of pretending one number is the truth.

2. Sources are named

Formulas come from the planning literature (Agostini, Ostrow, Binet & Field, Dorfman-Steiner), industry methodology (Geopath, IEG, CEIR, IAB, AMEC) and official rate documentation (Meta, GSM specifications). Every tool page lists its references.

3. Honest labels

Benchmarks carry their year. Practitioner conventions with no primary source are labelled as such. Where the industry disagrees with itself (EMV, ATT opt-in rates), we show the disagreement rather than picking a side quietly.

Privacy

All calculators run entirely in your browser. Inputs are never transmitted or stored. Shareable links encode your inputs in the URL only when you copy them.

Corrections

Spotted an error in a formula, benchmark or source? Email corrections@newmediafellows.com — data quality is the entire point of this site.

Who built this

New Media Fellows is built and maintained by Santosh P — LinkedIn · X. Background: scaled BookMyShow's live events and sponsorship business from ₹50 crore to ₹770 crore in GMV, built India's first section-level dynamic pricing model for IPL ticketing, and has run commercial/sponsorship mandates for India Maritime Week and the WAVES Summit. Currently Commercial & IP Lead at SCARA, after co-founding WSH. This site is self-built — no team, no investors, no ads.

Also building: resear.sh

A live map of India's sponsorship and culture economy — which brands back which properties and communities, across sport, music, esports, college fests and creator collabs, instead of waiting for trade press to report it after the fact. Built solo (Cloudflare plus AI agents doing the mapping, no dev team behind it), and still early: 2,513 brands, 1,990 properties and 2,890 communities tracked so far, with 203 connections verified to a two-source standard and the rest labelled by confidence rather than presented as fact.

resear.sh →