Holiday lights for Prince William County

PWC Lights is a free set of holiday decorating calculators for Prince William County homeowners — strands, outlets, cords, clips, décor counts, Halloween props, and season energy cost. Measure your porch, roofline, and yard once, then plan your own setup with a shopping list that fits.

Calculators run in your browser — nothing you type is uploaded. Community light and trick-or-treat maps are coming later this season. Learn more on About or reach us via Contact.

Decorating calculators About PWC Lights

How the calculators help

Decorating calculators estimate quantities and loads before you buy more strands, panels, paint, or overload an outdoor receptacle — including specialty planners for luminaria candle packs, gift-box stack stability, blow-mold driveway lines, nutcracker porch fit, porch mitten clips, tombstone LED nights, dry-ice cauldrons, skull paths, silhouette stakes, reindeer antler wraps, candy-chute slopes, cobweb spray cans, hanging-ghost clearance, motion-sensor prop placement, roof star sizing, and wreath storage. Measure once, shop closer to the right count, then confirm against product labels. They are planning aids, not an electrical-code stamp. Full story: About · Contact · Privacy.

A one-evening measuring plan

Most calculators here need the same handful of measurements, so take them all at once with a 25-ft tape and a notepad: each eave and gutter run in feet, porch railing and column heights, door and window openings, the distance from the sidewalk to the front of the house, and which outdoor outlets are GFCI-protected. Note the height of any tree branches you plan to hang from and the width of the walkway trick-or-treaters use.

With those numbers, a typical single-story front — say 48 ft of gutter, one 30-ft railing, and two shrubs — becomes a shopping list in a few minutes: icicle sets for the gutter, clips at your chosen spacing, a bow or garland count for the railing, and net lights for the shrubs. Then check the electrical side before you buy: add up nameplate watts on the circuit and keep continuous holiday loads around 80% of the breaker rating, so a 15-amp circuit carries about 1,440 watts. Keep the notepad with your stored lights, and next season you only re-measure what changed.

Plan your lights

Estimate strands, bulbs, clips, cords, nets, stakes, timers, candy counts, projection throw, outdoor receptacles, controller loads, curtain drops, column wraps, battery runtime, reel capacity, rope-light channel fills, hay-bale walls, village shelves, speaker AWG, wreath-hanger clearance, icicle drip density, bush volume nets, amp headroom, snow-blanket rolls, low-lying fog ice loads, tree-stand water days, stair banister garland, spider-web coverage, net-face overlap, inflatable cord amp budgets, outdoor bow ribbon yardage, tree-topper spike clearance, mantel candle clusters, bat window clings, porch urn insert fit, hanging spider drops, foam tombstone paint ounces, lighted present stacks, village platform area, LED curtain width panels, fog hose runs, witch-hat tree counts, lantern fuel nights, luminaria candle packs, gift-box stack stability, blow-mold driveway counts, nutcracker porch fit, pumpkin pillar height, porch mitten clips, tombstone LED pack nights, present-bow diagonals, eave ornament hooks, cauldron dry-ice pounds, mailbox swag bow fit, skull path markers, projector window coverage, silhouette stakes, porch lantern chain, reindeer antler wraps, ladder clip rung moves, graveyard fog-fan CFM, wreath S-hooks, candy-chute slope, spider-web corners, cobweb spray cans, spotlight stake depth, village street length, hanging-ghost clearance, light storage reels, tomato-cage trees, light balls, coffin prop plywood, graveyard fence panels, prop motion-sensor reach, roof star size, garland adhesive hooks, wreath storage boxes, snowflake tree hangs, and season kWh cost — 108 free calculators.

Open calculators

PWC Lights is a local community utility — not a contractor, install service, or paid-listings marketplace. Calculator results are planning estimates; always confirm against product labels and outlet ratings.